In America, we then made a commitment, particularly after World War II with the GI Bill, to massively expand our commitment to college education, and that meant we had more engineers and we had more scientists and that meant we had better technology, which meant that we were more productive and we could succeed in the global marketplace.

In order for us to solve many big problems around the world, it is in our interest to work with Russia and obtain their cooperation.

My second piece of advice is to stay global. As the world continues to change and we become more connected to each other, globalization will bring both benefits and disruptions to our lives. But either way, it's here, and it's not going away.

Let us remember that we can do these things not just because of wealth or power, but because of who we are: one nation under God, indivisible, with liberty and justice for all.

I'm personally very grateful to my many friends in the Greek-American community, sons and daughters of Greece who have found success in every walk of American life.

America remains the one indispensable nation. And the world needs a strong America.

There are things I cannot say.